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2018 Governor · FL

Quinnipiac University · fieldwork ended 2018-11-01 (5 days before the election) · 1,142 respondents · Live Phone

The poll said

Democrat 50% · Republican 43%

D+7.0

The certified result

Democrat 49.19% · Republican 49.59%

R+0.4

The arithmetic

  1. Poll margin = 50 − 43 = 7.00
  2. Actual margin = 49.190 − 49.585 = -0.395
  3. Signed miss = 7.00 − (-0.395) = 7.395
  4. Absolute miss = |7.395| = 7.395

The poll overstated the Democrat by 7.4 points and had the wrong leader.

Where these numbers come from

Poll and result: 538 raw_polls.csv. Poll ID 56770, race ID 138 (538 database).